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In which situation will estimating total population change only from two census numbers remain incomplete?

Answer and explanation

Correct answer: When the causes of the processes have to be understood

Correct answer: A. Comparing two census totals can show whether the population increased, decreased, or remained nearly stable between two dates. However, the totals alone do not explain how the change occurred. To understand the causes, we must examine births, deaths, and migration, and where relevant the age structure and other demographic conditions. A is correct because asking for causes requires more information than the two final totals provide. B is wrong because two numbers may be sufficient for a simple numerical comparison if only the final change is needed. C is not a reason for incompleteness; if there are truly no births, deaths, or migrations, the population process would be very limited. D is wrong because a fixed boundary can make comparison clearer, although it does not explain causes. Memory cue: census totals show the result; demographic processes explain the result.

Related tags

CensusPopulation ProcessesCause AnalysisBirths Deaths MigrationProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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